Research Farm, Brookings, South Dakota, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Research Farm, Brookings, South Dakota, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 74 of Moderate air quality on the same day.
Day & Night AQI Trend: 11th Jul - 12th Jul 2026
Research Farm, Brookings, South Dakota, United States
5 AM11th Jul 2026
9 PM
4 AM12th Jul 2026
84AQI
34AQI
71AQI
28AQI
In the last 24 hours,
Research Farm's AQI reached its highest point of 84 at 12 PM during the Day, while the lowest point, 28, was recorded at 11 PM during the Night between 11th Jul and 12th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Research Farm, Brookings, South Dakota, United States
18°C12/23°C
16°C10/24°C
17°C9/27°C
17°C9/25°C
17°C14/21°C
17°C11/24°C
17°C12/25°C
18°C9/26°C
17°C15/20°C
19°C10/25°C
20°C15/26°C
19°C13/24°C
18°C11/25°C
20°C14/25°C
21°C16/25°C
24°C20/27°C
28°C22/34°C
25°C19/31°C
23°C19/29°C
24°C18/33°C
23°C16/30°C
24°C17/32°C
24°C17/31°C
26°C19/33°C
27°C20/34°C
23°C19/27°C
23°C16/29°C
24°C17/30°C
26°C19/34°C
27°C19/34°C
36AQI
27AQI
39AQI
27AQI
2026 Days Vs Air Quality
Research Farm, Brookings, South Dakota, United States
87%
166
13%
24
Total number of days with different AQI categories in last 193 days in 2026 (172 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 193 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Research Farm, Brookings, South Dakota, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI (US)
34AQI (US)
42AQI (US)
39AQI (US)
24AQI (US)
33AQI (US)
28AQI (US)
31AQI (US)
28AQI (US)
32AQI (US)
26AQI (US)
23AQI (US)
40AQI (US)
24AQI (US)
24AQI (US)
35AQI (US)
31AQI (US)
35AQI (US)
28AQI (US)
26AQI (US)
39AQI (US)
43AQI (US)
36AQI (US)
31AQI (US)
26AQI (US)
37AQI (US)
36AQI (US)
27AQI (US)
35AQI (US)
43AQI (US)
33AQI (US)
36AQI (US)
31AQI (US)
30AQI (US)
28AQI (US)
41AQI (US)
43AQI (US)
39AQI (US)
29AQI (US)
31AQI (US)
45AQI (US)
51AQI (US)
73AQI (US)
52AQI (US)
48AQI (US)
46AQI (US)
44AQI (US)
31AQI (US)
38AQI (US)
34AQI (US)
28AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
44AQI (US)
28AQI (US)
39AQI (US)
32AQI (US)
31AQI (US)
34AQI (US)
43AQI (US)
61AQI (US)
50AQI (US)
60AQI (US)
34AQI (US)
35AQI (US)
33AQI (US)
29AQI (US)
24AQI (US)
43AQI (US)
45AQI (US)
28AQI (US)
34AQI (US)
22AQI (US)
25AQI (US)
30AQI (US)
46AQI (US)
50AQI (US)
54AQI (US)
37AQI (US)
32AQI (US)
32AQI (US)
45AQI (US)
77AQI (US)
31AQI (US)
27AQI (US)
56AQI (US)
50AQI (US)
40AQI (US)
28AQI (US)
28AQI (US)
32AQI (US)
28AQI (US)
30AQI (US)
30AQI (US)
27AQI (US)
33AQI (US)
42AQI (US)
25AQI (US)
41AQI (US)
43AQI (US)
43AQI (US)
40AQI (US)
37AQI (US)
41AQI (US)
37AQI (US)
18AQI (US)
27AQI (US)
40AQI (US)
49AQI (US)
66AQI (US)
29AQI (US)
23AQI (US)
30AQI (US)
25AQI (US)
19AQI (US)
23AQI (US)
23AQI (US)
21AQI (US)
21AQI (US)
28AQI (US)
36AQI (US)
39AQI (US)
41AQI (US)
37AQI (US)
52AQI (US)
29AQI (US)
30AQI (US)
65AQI (US)
53AQI (US)
76AQI (US)
58AQI (US)
59AQI (US)
53AQI (US)
42AQI (US)
54AQI (US)
48AQI (US)
43AQI (US)
41AQI (US)
49AQI (US)
43AQI (US)
43AQI (US)
25AQI (US)
22AQI (US)
17AQI (US)
30AQI (US)
23AQI (US)
13AQI (US)
21AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
22AQI (US)
18AQI (US)
20AQI (US)
18AQI (US)
22AQI (US)
17AQI (US)
16AQI (US)
18AQI (US)
11AQI (US)
17AQI (US)
20AQI (US)
18AQI (US)
13AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
16AQI (US)
17AQI (US)
17AQI (US)
26AQI (US)
31AQI (US)
16AQI (US)
20AQI (US)
24AQI (US)
34AQI (US)
37AQI (US)
23AQI (US)
49AQI (US)
34AQI (US)
42AQI (US)
65AQI (US)
62AQI (US)
52AQI (US)
53AQI (US)
38AQI (US)
56AQI (US)
54AQI (US)
74AQI (US)
32AQI (US)
38AQI (US)
40AQI (US)
33AQI (US)
40AQI (US)
21AQI (US)
50AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
July50AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202540AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
January29AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
February23AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
December24AQI (US)
202232AQI (US)
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
July61AQI (US)
Lowest AQI (US) recorded in
December21AQI (US)
202034AQI (US)
Highest AQI (US) recorded in
June40AQI (US)
Lowest AQI (US) recorded in
July29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Research Farm's annual 2026 AQI (US) (35) shows an average percentage change of 0.6% (worsened AQI (US)) compared to previous years: 2020 (34), 2021 (35), 2022 (32), 2023 (37), 2024 (32), 2025 (40).